DT pairing (P0, P6, P5 levels)

DT pairing is one of the three classic paired installation methods for angular contact ball bearings, with the full name Double Tandem (series connection) and code DT. The core is to install two angular contact ball bearings of the same specification in the same direction (outer ring wide/narrow edge in the same direction, contact angle centerline in the same line), forming a unidirectional load superposition layout, suitable for radial load+ultra large unidirectional axial load conditions. It is the core choice for heavy-duty shaft systems that need to withstand unidirectional large axial forces, such as rolling mills, cranes, hydraulic equipment, etc. It can be adapted to the full series of angular contact ball bearings such as 7000C/AC/B and AC7000 all ceramic types.

Model Basic Dimensions Basic rated dynamic load WeightType
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
7211BTNDT尼龙保持器 55 100 21 75 72 1.254 DT pairing (P0, P6, P5 levels)
7311CTNDT尼龙保持器 55 120 29 141 121 2.9 DT pairing (P0, P6, P5 levels)
7311ATNDT尼龙保持器 55 120 29 139 123 2.82 DT pairing (P0, P6, P5 levels)
7311BTNDT尼龙保持器 55 120 29 128 113 2.9 DT pairing (P0, P6, P5 levels)
7411ATNDT尼龙保持器 55 140 33 192 165 4.72 DT pairing (P0, P6, P5 levels)
7411BTNDT尼龙保持器 55 140 33 179 153 4.72 DT pairing (P0, P6, P5 levels)
7812BTNDT尼龙保持器 60 78 10 24.4 25.8 0.14 DT pairing (P0, P6, P5 levels)
7912ACTNDT尼龙保持器 60 85 13 29.8 35.5 0.394 DT pairing (P0, P6, P5 levels)
7012ATNDT尼龙保持器 60 95 18 53.5 59 0.834 DT pairing (P0, P6, P5 levels)
7012BTNDT尼龙保持器 60 95 18 46.4 50.7 0.9 DT pairing (P0, P6, P5 levels)
7212ATNDT尼龙保持器 60 110 22 100 97.5 1.596 DT pairing (P0, P6, P5 levels)
7212BTNDT尼龙保持器 60 110 22 91 89 1.63 DT pairing (P0, P6, P5 levels)
7312CTNDT尼龙保持器 60 130 31 161 141 3.62 DT pairing (P0, P6, P5 levels)
7312ATNDT尼龙保持器 60 130 31 159 143 3.48 DT pairing (P0, P6, P5 levels)
7312BTNDT尼龙保持器 60 130 31 146 131 3.56 DT pairing (P0, P6, P5 levels)
7412ATNDT尼龙保持器 60 150 35 209 187 5.7 DT pairing (P0, P6, P5 levels)
7412BTNDT尼龙保持器 60 150 35 194 173 5.7 DT pairing (P0, P6, P5 levels)
7813BTNDT尼龙保持器 65 85 10 30.6 32 0.17 DT pairing (P0, P6, P5 levels)
7913ACTNDT尼龙保持器 65 90 13 31 39 0.422 DT pairing (P0, P6, P5 levels)
7013ATNDT尼龙保持器 65 100 18 56.5 65.5 0.91 DT pairing (P0, P6, P5 levels)